2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/avstring.h"
20 #include "libavutil/common.h"
21 #include "libavutil/opt.h"
27 typedef struct VP9MetadataContext {
30 CodedBitstreamContext *cbc;
31 CodedBitstreamFragment fragment;
40 static int vp9_metadata_filter(AVBSFContext *bsf, AVPacket *pkt)
42 VP9MetadataContext *ctx = bsf->priv_data;
43 CodedBitstreamFragment *frag = &ctx->fragment;
46 err = ff_bsf_get_packet_ref(bsf, pkt);
50 err = ff_cbs_read_packet(ctx->cbc, frag, pkt);
52 av_log(bsf, AV_LOG_ERROR, "Failed to read packet.\n");
56 for (i = 0; i < frag->nb_units; i++) {
57 VP9RawFrame *frame = frag->units[i].content;
58 VP9RawFrameHeader *header = &frame->header;
59 int profile = (header->profile_high_bit << 1) + header->profile_low_bit;
61 if (header->frame_type == VP9_KEY_FRAME ||
62 header->intra_only && profile > 0) {
63 if (ctx->color_space >= 0) {
64 if (!(profile & 1) && ctx->color_space == VP9_CS_RGB) {
65 if (!(ctx->color_warnings & 2)) {
66 av_log(bsf, AV_LOG_WARNING, "Warning: RGB "
67 "incompatible with profiles 0 and 2.\n");
68 ctx->color_warnings |= 2;
71 header->color_space = ctx->color_space;
74 if (ctx->color_range >= 0)
75 header->color_range = ctx->color_range;
76 if (header->color_space == VP9_CS_RGB) {
77 if (!(ctx->color_warnings & 1) && !header->color_range) {
78 av_log(bsf, AV_LOG_WARNING, "Warning: Color space RGB "
79 "implicitly sets color range to PC range.\n");
80 ctx->color_warnings |= 1;
82 header->color_range = 1;
84 } else if (!(ctx->color_warnings & 4) && header->intra_only && !profile &&
85 ctx->color_space >= 0 && ctx->color_space != VP9_CS_BT_601) {
86 av_log(bsf, AV_LOG_WARNING, "Warning: Intra-only frames in "
87 "profile 0 are automatically BT.601.\n");
88 ctx->color_warnings |= 4;
92 err = ff_cbs_write_packet(ctx->cbc, pkt, frag);
94 av_log(bsf, AV_LOG_ERROR, "Failed to write packet.\n");
100 ff_cbs_fragment_reset(ctx->cbc, frag);
103 av_packet_unref(pkt);
108 static int vp9_metadata_init(AVBSFContext *bsf)
110 VP9MetadataContext *ctx = bsf->priv_data;
112 return ff_cbs_init(&ctx->cbc, AV_CODEC_ID_VP9, bsf);
115 static void vp9_metadata_close(AVBSFContext *bsf)
117 VP9MetadataContext *ctx = bsf->priv_data;
119 ff_cbs_fragment_free(ctx->cbc, &ctx->fragment);
120 ff_cbs_close(&ctx->cbc);
123 #define OFFSET(x) offsetof(VP9MetadataContext, x)
124 #define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM)
125 static const AVOption vp9_metadata_options[] = {
126 { "color_space", "Set colour space (section 7.2.2)",
127 OFFSET(color_space), AV_OPT_TYPE_INT,
128 { .i64 = -1 }, -1, VP9_CS_RGB, FLAGS, "cs" },
129 { "unknown", "Unknown/unspecified", 0, AV_OPT_TYPE_CONST,
130 { .i64 = VP9_CS_UNKNOWN }, .flags = FLAGS, .unit = "cs" },
131 { "bt601", "ITU-R BT.601-7", 0, AV_OPT_TYPE_CONST,
132 { .i64 = VP9_CS_BT_601 }, .flags = FLAGS, .unit = "cs" },
133 { "bt709", "ITU-R BT.709-6", 0, AV_OPT_TYPE_CONST,
134 { .i64 = VP9_CS_BT_709 }, .flags = FLAGS, .unit = "cs" },
135 { "smpte170", "SMPTE-170", 0, AV_OPT_TYPE_CONST,
136 { .i64 = VP9_CS_SMPTE_170 }, .flags = FLAGS, .unit = "cs" },
137 { "smpte240", "SMPTE-240", 0, AV_OPT_TYPE_CONST,
138 { .i64 = VP9_CS_SMPTE_240 }, .flags = FLAGS, .unit = "cs" },
139 { "bt2020", "ITU-R BT.2020-2", 0, AV_OPT_TYPE_CONST,
140 { .i64 = VP9_CS_BT_2020 }, .flags = FLAGS, .unit = "cs" },
141 { "rgb", "sRGB / IEC 61966-2-1", 0, AV_OPT_TYPE_CONST,
142 { .i64 = VP9_CS_RGB }, .flags = FLAGS, .unit = "cs" },
144 { "color_range", "Set colour range (section 7.2.2)",
145 OFFSET(color_range), AV_OPT_TYPE_INT,
146 { .i64 = -1 }, -1, 1, FLAGS, "cr" },
147 { "tv", "TV (limited) range", 0, AV_OPT_TYPE_CONST,
148 { .i64 = 0 }, .flags = FLAGS, .unit = "cr" },
149 { "pc", "PC (full) range", 0, AV_OPT_TYPE_CONST,
150 { .i64 = 1 }, .flags = FLAGS, .unit = "cr" },
155 static const AVClass vp9_metadata_class = {
156 .class_name = "vp9_metadata_bsf",
157 .item_name = av_default_item_name,
158 .option = vp9_metadata_options,
159 .version = LIBAVUTIL_VERSION_INT,
162 static const enum AVCodecID vp9_metadata_codec_ids[] = {
163 AV_CODEC_ID_VP9, AV_CODEC_ID_NONE,
166 const AVBitStreamFilter ff_vp9_metadata_bsf = {
167 .name = "vp9_metadata",
168 .priv_data_size = sizeof(VP9MetadataContext),
169 .priv_class = &vp9_metadata_class,
170 .init = &vp9_metadata_init,
171 .close = &vp9_metadata_close,
172 .filter = &vp9_metadata_filter,
173 .codec_ids = vp9_metadata_codec_ids,